/Engine/Plugins/MeshPainting/Source/MeshPaintingToolset/Public/MeshPaintInteractions.h
[FInputRayHit](API\Runtime\InteractiveToolsFramework\FInputRayHit) IsHitByClick ( const [FInputDeviceRay](API\Runtime\InteractiveToolsFramework\FInputDeviceRay) & ClickPos, bool bIsFallbackClick )